1 Answer
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0.0.0.0/8 is not a usefully routeable netblock. (See this bogons reference), so I'd say it's more likely a broken iptables invocation, rather than anything nasty.

Converting that IP to a single, decimal number (calc here), it becomes 9797, which looks more like a port number. Stretching my guess, you may have a broken $VARIABLE reference in your iptables script that's expanding to an empty string, leaving a port number in the wrong place. That's where I'd start looking, anyway.